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curriculum/challenges/english/blocks/learn-responsive-web-design-by-building-a-piano/612e804c54d5e7308d7ebe56.md

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--description--

Within your .keys element, add seven div elements. Give them all the class key.

--hints--

You should create seven new div elements.

js
const divDivDiv = document.querySelectorAll('div');
assert(divDivDiv?.length === 9);

Your seven new div elements should be within your .keys element.

js
const keys = document.querySelector('.keys');
assert([...keys?.children].length === 7);
assert([...keys?.children].every(child => child?.tagName === 'DIV'));

Your seven new div elements should all have the class set to key.

js
const keys = document.querySelector('.keys');
assert([...keys?.children].every(child => child?.classList?.contains('key')));

--seed--

--seed-contents--

html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Piano</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  </head>
  <body>
    --fcc-editable-region--
    <div id="piano">
      <div class="keys"></div>
    </div>
    --fcc-editable-region--
  </body>
</html>
css